UEX/650 Upgrade Kit Cat. No. 790 For CP650 Cinema Processor Installation Instructions Issue 2 Part No.
Dolby® UEX/650 Upgrade Kit Installation Instructions Dolby Laboratories, Inc. Corporate Headquarters Dolby Laboratories, Inc. 100 Potrero Avenue San Francisco, CA 94103-4813 Telephone 415-558-0200 Fax 415-863-1373 www.dolby.com European Headquarters Dolby Laboratories, Inc.
Dolby® UEX/650 Upgrade Kit Installation Instructions UEX/650 Upgrade Kit 1 Introduction The UEX/650 Upgrade Kit converts a Dolby® Model CP650D Digital Cinema Processor into a CP650 with Dolby Digital Surround EXTM film soundtrack playback capability. For a detailed description of the format, please see Section 7. The kit also adds four S/PDIF digital signal inputs. These inputs accommodate PCM audio at sample rates of 48 and 44.1 kHz, plus Dolby Digital (consumer) bitstreams.
Dolby® UEX/650 Upgrade Kit Installation Instructions 2 Handling PC Boards This upgrade involves handling printed circuit boards. Many components are very sensitive to static electricity and can be destroyed if static charge on your body discharges through the component. You do not even have to touch the component to damage it. Before touching the components on the PC boards, ground yourself by rubbing the frame of the unit with each hand or wearing an earthing strap. 3 Installation Steps 1.
Dolby® UEX/650 Upgrade Kit Installation Instructions 5. Unplug the two ribbon cables connected to the internal circuit boards. 6. Remove the upper circuit board (Cat. No. 774A) using the left and right board ejectors. Place the board on a flat surface (such as a platter disk). The board should be oriented with the ejectors closest to you. 7. Remove the Cat. No. 790 board from its anti-static bag, and plug it into the lefthand side of the main board by aligning the two connectors as shown in Figure 3.
Dolby® UEX/650 Upgrade Kit Installation Instructions 4 Connections With the Cat. No. 790 board installed, all surround channels appear at the Option Card I/O connector on the rear panel of the CP650. You must move the Left Surround (Ls) and Right Surround (Rs) channel output wiring from the Main Audio Output connector to this connector. Do not use the Ls and Rs outputs on the main audio output connector. Additionally, install the wiring for the new Back Surround channel amplifiers.
Dolby® UEX/650 Upgrade Kit Installation Instructions Table 1 Option Card I/O Connector Pinout with Cat. No. 790 (or earlier Cat. No. 794) Installed Pin Signal with Cat. No. 790 Installed 1 S/PDIF 1 (L/R) Input + 2 S/PDIF 2 (C/SW) Input + 3 4 5 6 7 Back Surround Left – n.c.* n.c. Back Surround Right – Gnd – Digital Inputs See Note n.c. n.c. Left Surround – Right Surround – n.c. S/PDIF 3 (Ls/Rs) Input + n.c. n.c. Back Surround Left + n.c. n.c. Back Surround Right + n.c. S/PDIF 4 (Bsl/Bsr) Input + n.
Dolby® UEX/650 Upgrade Kit Installation Instructions 5 Alignment The Dolby Digital Surround EX format may be assigned to any user-assignable format button. After you make your assignment, the CP650 front-panel bar graph display and the PC setup software show the additional Back Surround outputs (Bsr and Bsl): L C R Rs Bsr Bsl Ls SW Figure 5 Front-Panel Display while running a Dolby Digital Surround EX Film The Dolby Digital Surround EX format is defined as Format 13.
Dolby® UEX/650 Upgrade Kit Installation Instructions 6 Assign a Digital Input Format After making the connections, you may assign a digital input format to one of the user-definable format buttons (U1, U2, or NS) if selection of digital inputs is desired. Using the PC setup software, select the desired format from the pull-down list for the format button to be assigned, or use the CP650 front-panel menu steps shown below.
Dolby® UEX/650 Upgrade Kit Installation Instructions 7 The Dolby Digital Surround EX Format The Dolby Digital Surround EX format adds a third surround channel to digital film sound, a concept first envisioned by sound designers at Lucasfilm’s Skywalker Sound postproduction facility. It gives sound mixers a new level of creative freedom. Dolby Digital Surround EX processing is fully compatible with all current 5.1 digital sound formats and theatre systems.
Dolby® UEX/650 Upgrade Kit Installation Instructions su rro un d Surround amplifiers Ls Bsl Le ft Dolby CP650 Bsr Ls Rs d un ro ur ts gh Ri 10 Back surround left Back surround right Back surround left Back surround right Rs Ls Bsl Bsr Rs Dolby Digital 5.1 mode Bs Rs un d Bsr Ls Bsl Bsr Rs su ft Le Bsl rro Surround amplifiers Ls Ls d un ro ur ts gh Ri U1 Dolby CP650 0 Rs Dolby Digital Surround EX mode Figure 6 Surround Speaker/Amplifier Switching for 5.
Dolby® UEX/650 Upgrade Kit Installation Instructions 8 Digital Audio Inputs There are two professional interface formats used for digital audio: AES/EBU (also known as AES3) and AES-3id. These stream the same digital data and professional audio header information over copper conductor links, but use different types of conductors and connectors.
Dolby® UEX/650 Upgrade Kit Installation Instructions impedance compromises the integrity of the bitstream and may create an unreliable link between pieces of equipment, particularly with long cable runs. 8.3 Multiple Sources: Conversion Between Interface Standards Although some details of the bitstreams used in the AES and S/PDIF standards are different, the audio information is exactly the same.
